Total cross sections of nuclei for 280 Mev neutrons.

The measurement of 28O-Mev neutron cross sections of various nuclei is described. The neutron beam used results from 340-Mev protons in the 184-in. cyclotron striking a 2-in. Be target. The neutron detector consists of a double coincidence anthracene scintillation counter telescope which counts recoil protons scattered at 15 deg from a paraffin cylinder placed in the collimated neutron beam. A 2-in. Cu absorber placed between the counters assures that only protons of energy greater than 250 Mev are counted. The cross sections for all nuclei measured from Li to Pb are smaller than the corresponding cross sections measured at 90 Mev by factors between 0.5 and 0.6.

The comet quadrilles : as danced at all the fashionable assemblies /

For piano.

Tables for rocket and comet orbits /

Bibliography: p. xxiii.

Analysis of (n, 2n) cross sections for nuclei of mass A>30 /

"Physics; Reactor technology--TID-4500, 36th ed."

Methods of computing the orbit of a comet or planet : appendix to the third volume of the translation of the Méchanique céleste /

Mode of access: Internet.

The tales of the late Henry Neele... Blanche of Bourbon. The garter. The magician's visitor. The comet. The houri. The poet's dream.

Mode of access: Internet.

Miscellaneous reflections, occasion'd by the comet which appear'd in December 1680. Chiefly tending to explode popular superstitions. Written to a doctor of the Sorbon,

Paged continuously.

Definitive determination of the orbit of comet 1898 I.

Typescript.

Comet Arend Roland, plate no. 5521

Taken with Curtis Schmidt Telescope, plate no. 5521

Comet Arend Roland, plate no. 5531

Taken with Curtis Schmidt Telescope, plate no. 5531

Condensation of vapor as induced by nuclei and ions.

"The contemporaneous variations of the nucleation and the ionization of the atmosphere of Providence, by Lulu B. Joslin": p. 123-154.